That’s interesting, I’d done it before and found a person with an identical name + surname, similar age, similar look, similar interests but zero relations or common contacts - but a fully real person, and both my name and surname are rare. But alas, and thankfully, my google “record” is very clean and all related to work.
But isn’t there something specific there? Which T&C specifically (not need to say to us, just to look for yourself) did they say you violated? Or do they refer to a blanket cover-all type clause in there saying “We reserve the right to terminate the relationship without due cause at any time”, meaning that they can do it whenever they want, without providing any explanation - which also protects you from having to deal with any claims from them in the future. These are very common in contracts.
Edit: the only case I ever heard of anyone’s bank account being closed, anywhere, was that of my friend who I talked about in my share your story, where he apparently went ballistic in a bank in the UK, was told to wait 15 mins, and then a person came with a few fat envelopes of cash, telling him his account was closed, he’s banned from all branches of that bank UK-wide, and this is all his cash, to take with him and never show up again or he’d be arrested on the spot. But you didn’t do that!